,D441 Objective Assessment – WGU Pharmacology OA –
Actual Questions & Study Guide | Guarantee Pass
Table of Contents
WGU D441 (OA) EXAM
Prefixes / Suffixes
Audrey's Study Guide for D441
Question 1
A nurse is reviewing the process of pharmacokinetics. Which of the following describes
the movement of a drug from the site of administration into the bloodstream?
A) Distribution
B) Metabolism
C) Absorption
D) Excretion
Correct Answer: C) Absorption
Rationale: Absorption is the process by which a drug moves from the site of administration
into the bloodstream. Distribution involves transport to tissues, metabolism involves
biotransformation, and excretion involves elimination.
Question 2
A patient is prescribed a medication that is administered intravenously. Which phase of
pharmacokinetics is bypassed with this route?
A) Distribution
B) Absorption
C) Metabolism
D) Excretion
,Correct Answer: B) Absorption
Rationale: IV administration bypasses the absorption phase because the drug is delivered
directly into the bloodstream.
Question 3
A nurse is teaching a patient about a medication that undergoes first-pass metabolism.
Which route of administration would avoid this effect?
A) Oral
B) Sublingual
C) Rectal
D) Enteral
Correct Answer: B) Sublingual
Rationale: Sublingual administration bypasses the hepatic first-pass effect because the
drug is absorbed directly into systemic circulation.
Question 4
Which of the following factors can affect drug absorption?
A) Route of administration
B) Gastric pH
C) Food in the stomach
D) All of the above
Correct Answer: D) All of the above
Rationale: Route of administration, gastric pH, and presence of food can all affect the rate
and extent of drug absorption.
Question 5
A nurse is calculating a medication dose. The order is for 0.5 g, and the available
medication is 250 mg per tablet. How many tablets should the nurse administer?
, A) 0.5 tablet
B) 1 tablet
C) 2 tablets
D) 3 tablets
Correct Answer: C) 2 tablets
Rationale: Convert 0.5 g to mg: 0.5 g = 500 mg. Dose ordered (500 mg) ÷ Dose available
(250 mg/tablet) = 2 tablets.
Question 6
Which of the following is TRUE about drug distribution?
A) Only free (unbound) drug is pharmacologically active
B) Protein-bound drug is immediately active
C) Distribution is immediate for all drugs
D) Distribution is not affected by blood flow
Correct Answer: A) Only free (unbound) drug is pharmacologically active
Rationale: Only the unbound (free) fraction of a drug is pharmacologically active and
available to exert therapeutic effects.
Question 7
A patient has low serum albumin levels. Which of the following is a potential
consequence for drug therapy?
A) Decreased drug effect
B) Increased free drug levels and risk of toxicity
C) No change in drug effect
D) Increased drug excretion
Correct Answer: B) Increased free drug levels and risk of toxicity
Rationale: Low albumin means fewer protein-binding sites, leading to increased free drug
levels and increased risk of toxicity.
Actual Questions & Study Guide | Guarantee Pass
Table of Contents
WGU D441 (OA) EXAM
Prefixes / Suffixes
Audrey's Study Guide for D441
Question 1
A nurse is reviewing the process of pharmacokinetics. Which of the following describes
the movement of a drug from the site of administration into the bloodstream?
A) Distribution
B) Metabolism
C) Absorption
D) Excretion
Correct Answer: C) Absorption
Rationale: Absorption is the process by which a drug moves from the site of administration
into the bloodstream. Distribution involves transport to tissues, metabolism involves
biotransformation, and excretion involves elimination.
Question 2
A patient is prescribed a medication that is administered intravenously. Which phase of
pharmacokinetics is bypassed with this route?
A) Distribution
B) Absorption
C) Metabolism
D) Excretion
,Correct Answer: B) Absorption
Rationale: IV administration bypasses the absorption phase because the drug is delivered
directly into the bloodstream.
Question 3
A nurse is teaching a patient about a medication that undergoes first-pass metabolism.
Which route of administration would avoid this effect?
A) Oral
B) Sublingual
C) Rectal
D) Enteral
Correct Answer: B) Sublingual
Rationale: Sublingual administration bypasses the hepatic first-pass effect because the
drug is absorbed directly into systemic circulation.
Question 4
Which of the following factors can affect drug absorption?
A) Route of administration
B) Gastric pH
C) Food in the stomach
D) All of the above
Correct Answer: D) All of the above
Rationale: Route of administration, gastric pH, and presence of food can all affect the rate
and extent of drug absorption.
Question 5
A nurse is calculating a medication dose. The order is for 0.5 g, and the available
medication is 250 mg per tablet. How many tablets should the nurse administer?
, A) 0.5 tablet
B) 1 tablet
C) 2 tablets
D) 3 tablets
Correct Answer: C) 2 tablets
Rationale: Convert 0.5 g to mg: 0.5 g = 500 mg. Dose ordered (500 mg) ÷ Dose available
(250 mg/tablet) = 2 tablets.
Question 6
Which of the following is TRUE about drug distribution?
A) Only free (unbound) drug is pharmacologically active
B) Protein-bound drug is immediately active
C) Distribution is immediate for all drugs
D) Distribution is not affected by blood flow
Correct Answer: A) Only free (unbound) drug is pharmacologically active
Rationale: Only the unbound (free) fraction of a drug is pharmacologically active and
available to exert therapeutic effects.
Question 7
A patient has low serum albumin levels. Which of the following is a potential
consequence for drug therapy?
A) Decreased drug effect
B) Increased free drug levels and risk of toxicity
C) No change in drug effect
D) Increased drug excretion
Correct Answer: B) Increased free drug levels and risk of toxicity
Rationale: Low albumin means fewer protein-binding sites, leading to increased free drug
levels and increased risk of toxicity.
